I might be a voice out of the crowd, I switched to Mac back in 2000 and never really looked back (use win for some work but as little as i have to) then it was iPhone since the 3g.... later 2016 I switched to Android, and really feel the difference is quite small.
Windows is still years behind (even if Win 10 is quite good) compared to OS X, Android to me is practically on par with iOS, different flavouir of the same thing, I can go back and forward with very little adjustment.... wich speaks volume about how well Android runs lately.
For me there is no "fun last thing" you can do on your iPhone as there won't be any "new fun things to do" in the newe Android Phone.